CN112542690B - Adjustable microstrip antenna and method for adjusting performance of microstrip antenna - Google Patents
Adjustable microstrip antenna and method for adjusting performance of microstrip antenna Download PDFInfo
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- CN112542690B CN112542690B CN202011435199.2A CN202011435199A CN112542690B CN 112542690 B CN112542690 B CN 112542690B CN 202011435199 A CN202011435199 A CN 202011435199A CN 112542690 B CN112542690 B CN 112542690B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
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Abstract
The application relates to an adjustable microstrip antenna and a method for adjusting performance of the microstrip antenna, wherein the adjustable microstrip antenna comprises: the antenna comprises a W-shaped antenna radiation body and an impedance adjusting patch; the antenna radiation body comprises a plurality of radiation units; the impedance adjusting patch is arranged on the radiating unit and used for adjusting the performance of the antenna based on the antenna performance adjusting requirement, and the antenna performance adjusting requirement comprises an antenna standing wave widening requirement. Through the method and the device, the problems that the performance of the microstrip antenna cannot be effectively improved and the processing difficulty of the microstrip antenna cannot be reduced in the related technology are solved.
Description
Technical Field
The present application relates to the field of antenna technology, and in particular, to an adjustable microstrip antenna and a method for adjusting performance of the microstrip antenna.
Background
An Advanced Driver Assistance System (ADAS) System is an active safety technology that collects environmental data inside and outside a vehicle at a first time by using various sensors mounted on the vehicle to perform technical processes such as identification, detection, tracking and the like of static and dynamic objects, so that a Driver can perceive a possible danger at the fastest time to draw attention and improve safety. Among them, the millimeter wave radar has many advantages and becomes an indispensable core sensor in the ADAS system. However, the detection performance of the conventional millimeter wave radar cannot meet the current increasing detection requirement, which greatly limits the development of the ADAS system. Therefore, how to improve the detection performance of the millimeter wave radar becomes an urgent problem to be solved in the field.
In the related art, the detection performance of the radar is improved by reducing the antenna standing wave ratio of the radar and increasing the working frequency of the radar. However, the increase of the operating frequency of the millimeter wave radar means a sharp increase of the difficulty of the processing technology, so that the existing processing production line of many enterprises cannot meet the current requirements of the processing technology.
At present, no effective solution is provided for the problems that the performance of the microstrip antenna cannot be effectively improved and the processing difficulty of the microstrip antenna cannot be reduced in the related technology.
Disclosure of Invention
The embodiment of the application provides an adjustable microstrip antenna and a method for adjusting the performance of the microstrip antenna, so as to at least solve the problems that the performance of the microstrip antenna cannot be effectively improved and the processing difficulty of the microstrip antenna cannot be reduced in the related technology.
In a first aspect, an embodiment of the present application provides an adjustable microstrip antenna, including: the antenna comprises a W-shaped antenna radiation body and an impedance adjusting patch; wherein the antenna radiating body comprises a plurality of radiating elements; the impedance adjustment patch is arranged on the radiation unit and used for adjusting the performance of the antenna based on the antenna performance adjustment requirement, and the antenna performance adjustment requirement comprises an antenna standing wave widening requirement.
In some embodiments, the radiation unit includes a first radiation element and a second radiation element connecting two adjacent first radiation elements, and two adjacent first radiation elements and their corresponding second radiation elements form a radiation subunit;
the arrangement modes of the impedance adjusting patches comprise a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-sided layout means that a plurality of the impedance adjusting patches are disposed on one side of the first radiation member, the double-sided layout means that a plurality of the impedance adjusting patches are disposed on both sides of the first radiation member, the continuous layout means that a plurality of the impedance adjusting patches are disposed on each of the first radiation members, and the spaced layout means that a plurality of the impedance adjusting patches are spaced apart from each other on the first radiation member.
In some of these embodiments, the impedance-tuning patch comprises a plurality of patch tuning parameters including patch length, patch width, patch shape, and deployment location; wherein the layout position represents a relative positional relationship between the impedance adjusting patch and the laid radiating element.
In some of these embodiments, the impedance adjusting patch includes an antenna copper-clad layer, a dielectric layer, and a ground copper-clad layer.
In some embodiments, the adjustable microstrip antenna further includes a matching end, and the matching end is connected to the antenna radiation body and the external channel respectively, and is used for communicating the adjustable microstrip antenna with the external channel.
In a second aspect, an embodiment of the present application provides a method for adjusting performance of a microstrip antenna, where the method is applied to a microstrip antenna, where the microstrip antenna includes a W-shaped antenna radiation body, where the antenna radiation body includes a plurality of radiation units, and the method includes:
acquiring antenna performance adjustment requirements of a user, wherein the antenna performance adjustment requirements comprise antenna standing wave widening requirements;
acquiring patch adjusting parameters of the impedance adjusting patch according to the antenna performance adjusting requirement;
and according to the patch adjusting parameters, arranging the impedance adjusting patch on the radiation unit to obtain the adjusted target microstrip antenna.
In some of these embodiments, the patch adjustment parameters include patch length, patch width, patch shape, and deployment location; wherein the layout position represents a relative positional relationship between the impedance adjusting patch and the laid radiation unit.
In some embodiments, the obtaining patch adjustment parameters of the impedance adjustment patch according to the antenna performance adjustment requirement includes:
acquiring at least one parameter of the length, width, shape and arrangement position of the impedance adjusting patch according to the antenna standing wave widening requirement;
in some embodiments, the radiation unit includes a first radiation element and a second radiation element connecting two adjacent first radiation elements, and two adjacent first radiation elements and their corresponding second radiation elements form a radiation subunit; the method further comprises the following steps:
acquiring the arrangement number and arrangement modes of the impedance adjusting patches according to the antenna standing wave widening requirement, wherein the arrangement modes comprise a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-sided layout means that a plurality of the impedance adjusting patches are disposed on one side of the first radiation member, the double-sided layout means that a plurality of the impedance adjusting patches are disposed on both sides of the first radiation member, the continuous layout means that a plurality of the impedance adjusting patches are disposed on each of the first radiation members, and the spaced layout means that a plurality of the impedance adjusting patches are spaced apart from each other on the first radiation member.
In some embodiments, before the disposing the impedance adjusting patch on the radiating element according to the patch adjusting parameter to obtain the adjusted target microstrip antenna, the method further includes:
acquiring the working frequency of a target antenna of a user;
and adjusting the length of any one of the first radiation part or the second radiation part in the antenna radiation body according to the working frequency of the target antenna so as to enable the current frequency of the microstrip antenna to reach the working frequency of the target antenna.
Compared with the related art, the adjustable microstrip antenna and the method for adjusting the performance of the microstrip antenna provided by the embodiment of the application include: the antenna comprises a W-shaped antenna radiation body and an impedance adjusting patch; the antenna radiation body comprises a plurality of radiation units; the impedance adjusting patch is arranged on the radiation unit and used for adjusting the performance of the antenna based on the antenna performance adjusting requirement, the antenna performance adjusting requirement comprises an antenna standing wave widening requirement, and the problems that the performance of the microstrip antenna cannot be effectively improved and the processing difficulty of the microstrip antenna cannot be reduced in the related technology are solved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a block diagram of an adjustable microstrip antenna according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of an impedance adjusting patch according to an embodiment of the present application;
fig. 3 is a schematic diagram of an overall structure of an adjustable microstrip antenna according to an embodiment of the present application;
FIG. 4 is a schematic diagram of an enlarged view of a portion of an adjustable microstrip antenna according to an embodiment of the present application;
FIG. 5 is a flowchart illustrating a method for adjusting performance of a microstrip antenna according to an embodiment of the present application;
fig. 6 is a flowchart of a method for adjusting performance of a microstrip antenna according to a first embodiment of the present application;
fig. 7 is a schematic diagram illustrating a comparison of the standing wave bandwidths of a target microstrip antenna and a conventional microstrip antenna according to a second embodiment of the present application;
fig. 8 is a schematic diagram of a standing wave direction of a target microstrip antenna according to a second embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (including a single reference) are to be construed in a non-limiting sense as indicating either the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but rather can include electrical connections, whether direct or indirect. The term "plurality" as used herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The various techniques described herein may be applied, but are not limited to, radar detection and other fields.
With the development of millimeter wave radars, 77GHz millimeter wave radars with smaller volume and stronger detection performance are gradually becoming the mainstream of the market. In the related art, the detection performance of the radar is improved by reducing the antenna standing wave ratio of the radar and increasing the operating frequency of the radar. However, higher radar operating frequencies mean a dramatic increase in the difficulty of the machining process.
Because the standing wave bandwidth of the microstrip antenna in the traditional millimeter wave radar is narrow, the requirement on the processing technology is high. Generally, the requirement of a VSWR (Voltage Standing Wave Ratio) of an antenna is less than 1.5, and the VSWR of the antenna is reduced to the minimum and a sufficient margin is left when the antenna is designed, so that the VSWR of the processed antenna is also less than 1.5, the bandwidth performance of the antenna is ensured, the link reflection is reduced, and the energy transmission is increased.
Based on the problem that the processing technology difficulty is sharply increased due to the fact that the working frequency of the radar is improved and the standing wave bandwidth of the microstrip antenna is narrow in the related art, the impedance adjusting patch is arranged on the W-shaped antenna radiation body to widen the standing wave bandwidth of the antenna, so that the bandwidth performance and the processing redundancy of the antenna are improved, the processing technology difficulty of the 77GHz millimeter wave radar can be well reduced, and meanwhile, a foundation is laid for improving the distance resolution of the radar.
An embodiment of the present application provides an adjustable microstrip antenna, fig. 1 is a block diagram of a structure of the adjustable microstrip antenna according to the embodiment of the present application, and as shown in fig. 1, an adjustable microstrip antenna 100 includes: a W-shaped antenna radiation body 10 and an impedance adjusting patch 20; wherein, the antenna radiation body 10 comprises a plurality of radiation units; the impedance adjusting patch 20 is disposed on the radiating element for adjusting the antenna performance based on antenna performance adjustment requirements, including antenna standing wave widening requirements.
The present embodiment provides an adjustable microstrip antenna, including: the antenna comprises a W-shaped antenna radiation body and an impedance adjusting patch; the antenna radiation body comprises a plurality of radiation units; the impedance adjusting patch is arranged on the radiation unit. This application is laid on the antenna radiation body through the impedance adjustment paster that will accord with antenna standing wave widening demand to promote microstrip antenna's standing wave bandwidth, avoided because the narrow problem that leads to processing yields low, the link reflection is big and energy transmission inefficiency of antenna bandwidth, improved processing yields and energy transmission efficiency, reduced the processing cost. In addition, when the adjustable microstrip antenna is further applied to the millimeter wave radar, the detection performance of the millimeter wave radar can be improved.
In some embodiments, the radiation unit includes a first radiation element and a second radiation element connecting two adjacent first radiation elements, and two adjacent first radiation elements and their corresponding second radiation elements form a radiation sub-unit.
The arrangement mode of the impedance adjusting patches 20 includes a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-side layout mode means that the plurality of impedance-adjusting patches 20 are disposed on one side of the first radiation member, the double-side layout mode means that the plurality of impedance-adjusting patches 20 are disposed on both sides of the first radiation member, the continuous layout mode means that the plurality of impedance-adjusting patches 20 are disposed on each first radiation member, and the spaced layout mode means that the plurality of impedance-adjusting patches 20 are spaced apart from each other on the first radiation member.
Furthermore, two adjacent first radiation components are connected through a second radiation component to form a slot-type radiation subunit.
Further, a W-shaped radiating structure is a radiating element, and the theoretical value of the length of the radiating element is one half of the operating wavelength of the antenna.
It should be noted that, as shown in fig. 3, two adjacent slot-shaped radiation sub-units and their corresponding second radiation components form a W-shaped radiation sub-unit.
In some of these embodiments, the impedance-adjusting patch 20 includes a plurality of patch adjustment parameters including patch length, patch width, patch shape, and deployment location; wherein the layout position represents a relative positional relationship between the impedance adjusting patch 20 and the laid radiation unit.
Wherein the relative positional relationship includes a relative distance between the impedance adjusting patch 20 and the arranged radiation unit.
Preferably, the patch length is 1mm to 20mm. Further, the patch length is 1mm.
Preferably, the patch width is 0.1mm to 5mm. Further, the patch width was 0.15mm.
Preferably, the relative distance between the impedance adjusting patch and the arranged radiation unit is 0.1 mm-5 mm. Further, the relative distance between the impedance adjusting patch and the arranged radiation unit is 0.13mm.
Further, the relative distance between the impedance adjusting patch and the arranged radiation unit may be the relative distance between the impedance adjusting patch and the edge of the arranged radiation unit.
In some embodiments, fig. 2 is a schematic structural diagram of an impedance adjusting patch according to the embodiment of the present application, and as shown in fig. 2, the impedance adjusting patch 20 includes an antenna copper-clad layer, a dielectric layer, and a ground copper-clad layer.
In some embodiments, as shown in fig. 1, the adjustable microstrip antenna 100 further includes a matching end 30, and the matching end 30 is connected to the antenna radiation body 10 and the external channel, respectively, for communicating the adjustable microstrip antenna 100 with the external channel.
The adjustable microstrip antenna provided by the embodiments of the present application is further described and illustrated by two specific embodiments.
In embodiment 1, fig. 3 is a schematic view of an overall structure of an adjustable microstrip antenna according to an embodiment of the present application, and as shown in fig. 3, the adjustable microstrip antenna 100 includes: a W-shaped antenna radiating body 10, an impedance adjusting patch 20 and a matching terminal 30; the matching end 30 is connected to the antenna radiation body 10 and the external channel, respectively, for communicating the adjustable microstrip antenna 100 with the external channel.
The antenna radiation body 10 includes a plurality of radiation elements; the radiation unit comprises first radiation parts and second radiation parts for connecting two adjacent first radiation parts, and the two adjacent first radiation parts and the corresponding second radiation parts form a radiation subunit.
Fig. 4 is a partially enlarged schematic view of the adjustable microstrip antenna according to the embodiment of the present application, and as shown in fig. 4, a plurality of impedance adjusting patches 20 are arranged at intervals on two sides of the first radiating element, and the impedance adjusting patches 20 are rectangular.
As shown in fig. 3, two adjacent first radiation elements are connected by a second radiation element to form a slot-type radiation subunit. Two adjacent radiating subunits are connected through a second radiating component to form a bent radiating unit.
In embodiment 2, the adjustable microstrip antenna 100 includes: a W-shaped antenna radiating body 10, an impedance adjusting patch 20 and a matching terminal 30; the matching end 30 is connected to the antenna radiation body 10 and the external channel, respectively, for communicating the adjustable microstrip antenna 100 with the external channel. The plurality of impedance adjusting patches 20 are arranged on two sides of the first radiation part at intervals, the impedance adjusting patches 20 are rectangular, the length of the impedance adjusting patches 20 is 1mm, the width of the impedance adjusting patches 20 is 0.15mm, the relative distance between the impedance adjusting patches 20 and the arranged radiation units is 0.13mm, and the adjustable microstrip antenna 100 works in a 77GHz millimeter wave band.
The antenna radiation body 10 includes a plurality of radiation elements; the radiation unit comprises first radiation parts and second radiation parts for connecting two adjacent first radiation parts, and the two adjacent first radiation parts and the corresponding second radiation parts form a radiation subunit. Two adjacent first radiation parts are connected through a second radiation part to form a groove-shaped radiation subunit. Two adjacent radiating subunits are connected through a second radiating component to form a W-shaped radiating unit.
It should be noted that the shape, the number, the arrangement position, and the arrangement manner of the impedance adjusting patches may be set according to an actual application scenario, which is not limited in this embodiment.
The present embodiment further provides a method for adjusting performance of a microstrip antenna, which is applied to a microstrip antenna, where the microstrip antenna includes a W-shaped antenna radiation body, the antenna radiation body includes a plurality of radiation units, fig. 5 is a flowchart of the method for adjusting performance of the microstrip antenna according to the embodiment of the present application, and as shown in fig. 5, the flowchart includes the following steps:
step S510, obtaining an antenna performance adjustment requirement of the user, where the antenna performance adjustment requirement includes an antenna standing wave widening requirement.
Step S520, obtaining patch adjusting parameters of the impedance adjusting patch according to the antenna performance adjusting requirement.
And step S530, according to the patch adjusting parameters, arranging the impedance adjusting patch on the radiating unit to obtain the adjusted target microstrip antenna.
Through the steps S510 to S530, the antenna performance adjustment requirement of the user is obtained, where the antenna performance adjustment requirement includes an antenna standing wave widening requirement; acquiring a patch adjusting parameter of an impedance adjusting patch according to the antenna performance adjusting requirement; and according to the patch adjusting parameters, arranging the impedance adjusting patch on the radiating unit to obtain the adjusted target microstrip antenna. This application is laid on the antenna radiation body through the impedance adjustment paster that will accord with antenna performance adjustment demand to promote the standing wave bandwidth of antenna, thereby can avoid because the antenna bandwidth is narrow to lead to the problem that the processing technology requirement is high, the degree of difficulty is big, realized effectively promoting microstrip antenna performance simultaneously, reduced the processing technology degree of difficulty of antenna, solved in the correlation technique, can't effectively improve microstrip antenna performance and reduced the problem of microstrip antenna processing technology degree of difficulty.
In some of these embodiments, the patch adjustment parameters include patch length, patch width, patch shape, and deployment location; wherein the layout position represents a relative positional relationship between the impedance adjusting patch and the laid radiation unit.
It should be noted that the layout position includes a position where the impedance adjusting patch is disposed on a specific part in the radiation unit and a distance from an edge of the part.
In some embodiments, at least one of the patch length, the patch width, the patch shape, and the layout position of the impedance adjusting patch is obtained according to the antenna standing wave widening requirement.
The antenna standing wave broadening requirements include a target standing wave bandwidth and a target standing wave direction.
According to the embodiment, at least one parameter of the length, the width, the shape and the arrangement position of the impedance adjusting patch is obtained according to the antenna standing wave widening requirement, and then the impedance adjusting patch meeting the antenna standing wave widening requirement can be arranged on the antenna radiation body, so that the standing wave bandwidth of the antenna is improved, the problems of low processing yield, large link reflection and low energy transmission efficiency caused by narrow antenna bandwidth are solved, the processing yield and the energy transmission efficiency are improved, and the processing cost is reduced. In addition, when the adjusted target microstrip antenna is further applied to the millimeter wave radar, the detection performance of the millimeter wave radar can be improved.
In some of these embodiments, the antenna performance adjustment requirement further includes an antenna side lobe level suppression requirement. The patch width of the impedance adjusting patch can be adjusted according to the requirement of antenna side lobe level suppression.
According to the embodiment, the width of the patch of the impedance adjusting patch is adjusted based on the requirement of the antenna side lobe level suppression, so that the radiation of the antenna side lobe can be reduced, and the performance of the microstrip antenna is further improved.
In some embodiments, the radiation unit includes a first radiation element and a second radiation element connecting two adjacent first radiation elements, and two adjacent first radiation elements and their corresponding second radiation elements form one radiation subunit.
Acquiring the arrangement quantity and arrangement modes of the impedance adjusting patches according to the antenna standing wave widening requirement, wherein the arrangement modes comprise a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-side layout mode represents that a plurality of impedance adjusting patches are arranged on one side of the first radiation part, the double-side layout mode represents that a plurality of impedance adjusting patches are arranged on two sides of the first radiation part, the continuous layout mode represents that a plurality of impedance adjusting patches are arranged on each first radiation part, and the interval layout mode represents that a plurality of impedance adjusting patches are arranged on the first radiation part at intervals.
At least one of a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode, or a combination of multiple arrangement modes can be arbitrarily selected according to the antenna standing wave widening requirements in different application scenes, as long as the antenna standing wave widening requirements in the application scenes can be met, and the embodiment is not limited.
The number of the impedance adjusting patches to be arranged can be set arbitrarily according to the antenna standing wave widening requirements in different application scenarios, as long as the antenna standing wave widening requirements in the application scenarios can be met, and the embodiment is not limited.
In some embodiments, a target antenna operating frequency of a user is obtained; according to the working frequency of the target antenna, the length of any one first radiating component or second radiating component in the antenna radiating body is adjusted, so that the current frequency of the microstrip antenna reaches the working frequency of the target antenna.
By the embodiment, the working frequency of the target antenna of the user is obtained; according to the working frequency of the target antenna, the length of any one first radiating component or second radiating component in the antenna radiating body is adjusted, so that the current frequency of the microstrip antenna reaches the working frequency of the target antenna, the design requirement of the working frequency of the antenna under a specific application scene can be met, and the application range of the microstrip antenna is wider.
The examples of the present application are further described and illustrated by the following two specific examples.
The method for adjusting performance of a microstrip antenna provided in this embodiment is applied to a microstrip antenna, where the microstrip antenna includes a W-shaped antenna radiation body, the antenna radiation body includes a plurality of radiation units, each radiation unit includes a first radiation part and a second radiation part connecting two adjacent first radiation parts, and two adjacent first radiation parts and the corresponding second radiation part form a radiation subunit.
Fig. 6 is a flowchart of a method for adjusting performance of a microstrip antenna according to a first embodiment of the present application, as shown in fig. 3, the method includes the following steps:
step S610, obtaining the antenna performance adjusting requirement of a user, wherein the antenna performance adjusting requirement comprises an antenna standing wave widening requirement and an antenna side lobe level suppression requirement; the patch adjustment parameters include patch length, patch width, patch shape, and placement position.
Step S620, according to the antenna standing wave widening requirement, at least one parameter of the length, width, shape and layout position of the impedance adjusting patches is obtained, and the number and layout mode of the impedance adjusting patches are obtained.
Step S630, according to the antenna side lobe level suppression requirement, obtaining the patch width of the impedance adjusting patch.
Step 640, arranging impedance adjusting patches on the radiation unit according to the patch adjusting parameters, the arrangement number and the arrangement mode to obtain an adjusted target microstrip antenna; the layout modes include a single-side layout mode, a double-side layout mode, a continuous layout mode and an interval layout mode.
The single-side layout mode represents that a plurality of impedance adjusting patches are arranged on one side of the first radiation part, the double-side layout mode represents that a plurality of impedance adjusting patches are arranged on two sides of the first radiation part, the continuous layout mode represents that a plurality of impedance adjusting patches are arranged on each first radiation part, and the interval layout mode represents that a plurality of impedance adjusting patches are arranged on the first radiation part at intervals.
The method for adjusting performance of a microstrip antenna according to the second embodiment is applied to a microstrip antenna in a millimeter wave radar, where the microstrip antenna includes a W-shaped antenna radiation body, the antenna radiation body includes a plurality of radiation units, each radiation unit includes a first radiation part and a second radiation part connecting two adjacent first radiation parts, and two adjacent first radiation parts and the corresponding second radiation part form a radiation subunit.
The method for adjusting performance of a microstrip antenna provided in the second embodiment includes the following steps:
(1) And acquiring the antenna performance adjusting requirements of users, wherein the antenna performance adjusting requirements comprise antenna standing wave widening requirements and antenna side lobe level suppression requirements.
(2) And acquiring at least one parameter of the length, width and shape of the patch of the impedance adjusting patch according to the widening requirement of the standing wave of the antenna.
For example, for a 77GHz microwave antenna, the patch length of the impedance adjusting patch may be set to 1mm, the patch width to 0.15mm, and the distance of the impedance adjusting patch from the edge of the 77GHz microwave antenna to 0.13mm.
(3) And acquiring the patch width of the impedance adjusting patch according to the requirement of antenna side lobe level suppression.
(4) And arranging a plurality of impedance adjusting patches at intervals on two sides of the first radiation part according to the patch adjusting parameters to obtain the adjusted target microstrip antenna.
Fig. 7 is a schematic diagram illustrating a comparison between the standing wave bandwidths of the target microstrip antenna and the conventional microstrip antenna according to the second embodiment of the present application, where as shown in fig. 7, a curve with the lowest point of the voltage standing wave ratio being above represents the standing wave bandwidth of the conventional microstrip antenna, and a curve with the lowest point of the voltage standing wave ratio being below represents the standing wave bandwidth of the target microstrip antenna after the impedance adjusting patch is added. Data analysis shows that the bandwidth of the standing wave of the antenna can be widened to 10% through different impedance adjusting patch adjusting schemes, and therefore the method for adjusting the performance of the microstrip antenna has a good bandwidth widening effect. In addition, for a 77GHz microwave antenna, a Voltage Standing Wave Ratio (VSWR) is optimized from 1.32 to 1.08 at a frequency point of 76.5GHz, and the bandwidth processing performance is ensured to the greatest extent. Therefore, the method for adjusting the performance of the microstrip antenna can effectively reduce the difficulty of the processing technology of the microstrip antenna.
Fig. 8 is a schematic diagram of the standing wave direction of the target microstrip antenna according to the second embodiment of the present application, and as shown in fig. 8, the target microstrip antenna after adding the impedance adjusting patch can realize different standing wave directions, so that the flexibility of the microstrip antenna is improved.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. An adjustable microstrip antenna, comprising: the antenna comprises a W-shaped antenna radiation body and an impedance adjusting patch; wherein the antenna radiating body comprises a plurality of radiating elements;
the radiation unit comprises first radiation parts and second radiation parts for connecting two adjacent first radiation parts, wherein two adjacent first radiation parts and the corresponding second radiation parts form a radiation subunit, and two adjacent radiation subunits are connected through one second radiation part to form one radiation unit;
the impedance adjusting patch is arranged on the radiating unit and used for adjusting the performance of the antenna based on the antenna performance adjusting requirement, wherein the antenna performance adjusting requirement comprises the antenna standing wave widening requirement; the impedance adjusting patch comprises a plurality of patch adjusting parameters, wherein the patch adjusting parameters comprise patch length, patch width, patch shape and layout position; wherein the layout position represents a relative positional relationship between the impedance adjusting patch and the laid radiation unit, and the relative positional relationship includes a relative distance between the impedance adjusting patch and the laid radiation unit.
2. The adjustable microstrip antenna of claim 1,
the arrangement modes of the impedance adjusting patches comprise a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-sided layout means that a plurality of the impedance adjusting patches are disposed on one side of the first radiation member, the double-sided layout means that a plurality of the impedance adjusting patches are disposed on both sides of the first radiation member, the continuous layout means that a plurality of the impedance adjusting patches are disposed on each of the first radiation members, and the spaced layout means that a plurality of the impedance adjusting patches are spaced apart from each other on the first radiation member.
3. The adjustable microstrip antenna of claim 1, wherein the impedance adjustment patch comprises an antenna copper-clad layer, a dielectric layer and a ground copper-clad layer.
4. The adjustable microstrip antenna of claim 1 further comprising a matching end, wherein the matching end is connected to the antenna radiating body and the external channel respectively, for communicating the adjustable microstrip antenna with the external channel.
5. A method for adjusting the performance of a microstrip antenna, which is applied to a microstrip antenna, the microstrip antenna including a W-shaped antenna radiation body, the antenna radiation body including a plurality of radiation elements, wherein the radiation elements include first radiation elements and second radiation elements connecting two adjacent first radiation elements, two adjacent first radiation elements and their corresponding second radiation elements form a radiation subunit, two adjacent radiation subunits are connected by a second radiation element to form a radiation element, and the method includes:
acquiring antenna performance adjustment requirements of a user, wherein the antenna performance adjustment requirements comprise antenna standing wave widening requirements;
acquiring patch adjusting parameters of the impedance adjusting patch according to the antenna performance adjusting requirement;
according to the patch adjusting parameters, the impedance adjusting patch is arranged on the radiating unit to obtain an adjusted target microstrip antenna;
the patch adjusting parameters comprise the length of the patch, the width of the patch, the shape of the patch and the layout position; wherein the layout position represents a relative positional relationship between the impedance adjusting patch and the laid radiation unit, and the relative positional relationship includes a relative distance between the impedance adjusting patch and the laid radiation unit.
6. The method of claim 5, wherein obtaining the patch tuning parameters of the impedance tuning patch according to the antenna performance tuning requirement comprises:
and acquiring at least one parameter of the length, width, shape and arrangement position of the impedance adjusting patch according to the antenna standing wave widening requirement.
7. A method of adjusting microstrip antenna performance according to claim 5 further comprising:
acquiring the arrangement number and arrangement modes of the impedance adjusting patches according to the antenna standing wave widening requirement, wherein the arrangement modes comprise a single-side arrangement mode, a double-side arrangement mode, a continuous arrangement mode and an interval arrangement mode; the single-sided layout means that a plurality of the impedance adjusting patches are disposed on one side of the first radiation member, the double-sided layout means that a plurality of the impedance adjusting patches are disposed on both sides of the first radiation member, the continuous layout means that a plurality of the impedance adjusting patches are disposed on each of the first radiation members, and the spaced layout means that a plurality of the impedance adjusting patches are spaced apart from each other on the first radiation member.
8. The method of claim 7, wherein before the impedance adjusting patch is disposed on the radiating element according to the patch adjusting parameter to obtain the adjusted target microstrip antenna, the method further comprises:
acquiring the working frequency of a target antenna of a user;
and adjusting the length of any one of the first radiation part or the second radiation part in the antenna radiation body according to the working frequency of the target antenna so as to enable the current frequency of the microstrip antenna to reach the working frequency of the target antenna.
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|---|---|---|---|---|
| JP2001111336A (en) * | 1999-10-08 | 2001-04-20 | Toyota Central Res & Dev Lab Inc | Microstrip array antenna |
| CN108987914A (en) * | 2018-07-05 | 2018-12-11 | 易力声科技(深圳)有限公司 | A kind of paster antenna for making frequency modulation using closing line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0289085A3 (en) * | 1987-04-25 | 1990-06-20 | Yoshihiko Sugio | Phase control microstripline antenna |
| JP3001825B2 (en) * | 1997-02-28 | 2000-01-24 | 社団法人関西電子工業振興センター | Microstrip line antenna |
| JP3306592B2 (en) * | 1999-05-21 | 2002-07-24 | 株式会社豊田中央研究所 | Microstrip array antenna |
| CN104681938A (en) * | 2013-11-27 | 2015-06-03 | 哈尔滨黑石科技有限公司 | Improved W-shaped resonant cavity ultra-wide band antenna |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001111336A (en) * | 1999-10-08 | 2001-04-20 | Toyota Central Res & Dev Lab Inc | Microstrip array antenna |
| CN108987914A (en) * | 2018-07-05 | 2018-12-11 | 易力声科技(深圳)有限公司 | A kind of paster antenna for making frequency modulation using closing line |
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